Throttle-valve.



E. C. JONES.

THROTTLE VALVE.

APPLICATION FILED NOV. 17, 1910. RENEWED PEB.14, 1912.

1,037,630, Patented Sept. 3, 1912.

I UNITED sTA'r s PATENT OFFICE.

EIIERY O. JONES, 01 BOOK MART, GEORGIA, ABSIGNOB OF ONE-HALF T0 J. O.EZZELL,

01 BOOK m1, GEORGIA.

TBROTTLE-YALVE.

Specification of Letters Patent.

Patented Sept. 3, 1912.

Application tiled November 17, 1910, Serial No. 582,810. RenewedFebruary 14, 1812. serial No. 677,465.

To all whom it may concern:

Be it known that I, Earsnr C. Jones citizen of ther'United States,residin at ock Mart, in the county of Polk an Stateof (leor ia, haveinvented certain new and usefu Improvements in Throttle-Valves, of whichthe following is a specification.

This invention relates to im rovements in valves, more particularly totie class of throttle valves, or valves for controlling the )ussu e ofsteam under high pressure, and i118 f r)! one of its objects to rovide asimply constructed valve wherein a l flexible or yieldable ackings andother parts which are liable to e worn by the friction incident to theiroperation, are obviated.

Another object of the invention 18 to provide a valve of this characterwhich may be instantly opened or closed.

With these and other objects in view the invention consists in certainnovel features of construction as hereinafter shown and described andthen specifically pointed out in the claim; and, in the drawingsillustrative of the referred embodiment of the invention, Iugure 1 is alongitudinal sectional view of the improved valve; Fig. 2 is a sectionon the line 2-2 of Fi 1; Fi 8 is a detached perspective view 0 the vave;- Fig. 4 is an enlarged detached-perspective view of the valveoperatin member from bencath; Fi 5 is a side 0 evation of the upperportion 0 the device, illustrating the operation of the stop devices.

Corresponding and like parts are referred to in the followin descriptionand indicated in all the views of the drawings by the same referencecharacters.

The improved device comprises a body or shell 10 having a threaded inlet11 at one end and a threaded outlet 12 at the other end, and with aninternal valve seat 14 at the inner end of the outlet 12. Bearin uponthe seat 14 is a valve 15 of the osci lating form and provided with aslot 16. Directed upwardl from the bed or shell 10 is an integral s eeve17 internal y threaded, as at 18, the sleeve providing an openin ivingaccess'to the interior of the shell an t trough which the valve seat isground and the valve'insertcd or removed. Engagn in the threaded.portion of the sleeve a a cap 10 having a dependin central portionterminating in a-va ve sea 20 at its lower end. Mounted for rotationthrough the cap 19 is a stem 21 having a disk 22 at its lower endbearing steam and water tight against the seat 20. Depending from thedisk 22 is a pin 23 which operates in the slot 16 of the valve. Thevalve seat 14 is segmental in form, while the bearing face of the valve15 is correspondingly segmental and thus enga es rotatably upon theseat. By this simpe arrangement it will be obvious that when the stem isOscillated the pin 23, which is oil" the center of the stem, willactuate the valve, and open and close the discharge 12. Thus when thestem is rotated into one position the valve will be moved laterallywithin the shell and open the assagewa entirely therethrou h, and will ten cut 0 the discharge when 0- cated in its other osition.

Rising from tie cap 19 are two pins 24-25, and extendin mm the stem 21is another pin 26 whic moves between the pins 24-25. The pins 24-25 arelocated at a distance apart equal to one-fourth of a complete revolutionof the stem, and so locate that when the pin 26 is in en a ement withthe in 24 the valve 15 will )e fully closed, an when the stem 21 isturned to bring the pin 26 in contact with the pin 25 the valve will befully opened, as will be obvious. Thus the re uisite movement of thevalve is insured, an any excess of movement effectually prevented. Ifrequired a yieldable catch device 27 will be connected 0 the in 24 toengage the pin 26 and lock the later yieldably a position to prevent theaccidental displacement of the valve.

By this simple means it will be obvious that the pressure of the steamis utilized to maintain the valve 15 u on its seat 14 and likewisebearing honest the disk 22 to maintain the latter steam tight a ainstthe seat 26. The two members 2022 t ms co-act to maintain a steam tight'oint between the shell 10 and the stem 21, an thus obviate thenecessity for other means of preventing the esca e of steam. Thus allyieldable and sum ar fragile packings are obviated. By this arrangementalso an instantaneous action valve is p may be instant y cutoff bysimply throwing the pin 26 over a amst t a pin 24 and beneat the catch 2This is an important advantage in devices of this character, espereducedwhereby the steam ciali when employed in iconnection with. mac iinerywhere the instant shutting on" of steam is a necessity. I 4

Havin thus described my inventionmhat is claim as new is:

A valve body having a chamber andwith step and provided with a slotextending entirely therethrough and commumcatlng Wliil said step, and astem extending through one wall of said chamber and having a PIOJOC-tion extending into the slot of said valve.

In testimon whereof, I afiix my signature oppositely directed passagescommunicating in presence 0 two witnesses.

with thechamber, one of said passages hav ing a valve seat at'itsjuncture with the chamber and the chamber having a step-"at' ono'end, avalve within said chamber and engaging said seat and bearing upon saidEMERY C. JONES. [n.s.]

Witnesses:

C. G. MUNDY, I. F. Mtmox.

M'lvs sslss ssel, by sddrsssing the commissioner of I'atents,

will, D. 03'

